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Abstract #3830

Performance of an aerosol jet-deposited wireless resonant marker: in vitro temperature measurements and in vivo visualization

Caroline D. Jordan1, Bradford R. H. Thorne1, Arjun Wadhwa2, Eugene Ozhinsky1, Vincent Fratello2, Sravani Kondapavulur1,3,4, Aaron D. Losey1, Teri Moore1, Carol Stillson1, Colin Yee1, Ronald D. Watkins5, Greig C. Scott6, Alastair J. Martin1, Xiaoliang Zhang1, Mark W. Wilson1, and Steven W. Hetts1

1Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States, 2Quest Integrated, Kent, WA, United States, 3Graduate Program in Bioengineering, UC Berkeley-UCSF, Berkeley, CA, United States, 4Bioengineering and Therapeutic Sciences, University of California, Berkeley, Berkeley, CA, United States, 5Radiology, Stanford University, Stanford, CA, United States, 6Electrical Engineering, Stanford University, Stanford, CA, United States

Endovascular catheter-based procedures under MRI can be challenging as standard fabrication methods for markers are rigid and bulky, and new microfabrication methods need more analysis on their tracking characteristics. We analyzed a wireless resonant circuit tracking marker that was printed using aerosol jet deposition on a polymer catheter. In a phantom, we acquired bSSFP sequences and a B1+ map, and measured temperature using probes and MR thermometry. In vivo, in the carotid arteries, we acquired GRE sequences and a B1+ map. The marker demonstrated good signal, with minimal temperature increases, suggesting that these markers have good tracking characteristics.

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